diff --git a/larky/pom.xml b/larky/pom.xml
index 6c107d2de..de06bfa9e 100644
--- a/larky/pom.xml
+++ b/larky/pom.xml
@@ -52,7 +52,7 @@
         <google.re2j.version>1.8</google.re2j.version>
         <google.truth.version>1.4.4</google.truth.version>
         <javax.xml.bind.jaxb-api.version>2.3.1</javax.xml.bind.jaxb-api.version>
-        <org.bouncycastle.version>1.79</org.bouncycastle.version>
+        <org.bouncycastle.version>1.84</org.bouncycastle.version>
         <org.conscrypt.version>2.5.2</org.conscrypt.version>
         <org.jetbrains.annotations.version>24.0.1</org.jetbrains.annotations.version>
         <org.junit.version>4.13.2</org.junit.version>